Battery 
compartment cover
Use switch to select which type of battery will be used before inserting the battery into the compartment
2. | Next the WWVB time code reception will automatically | |
| start. This reception typically takes 10 minutes in good | |
| conditions. If after 10 minutes the WWVB time has not | |
| been received, use the “SET” key to enter the | |
| mode to manually set the Time, Time Zone and Date | |
| (see manual settings below). The clock will continue to | |
| search for WWVB each hour between 12am and 6am. | |
| When the clock has successfully connected with WWVB, | |
| it will override the manually set time and date. | |
| Note: When changing the battery: | |
| 1. | Be careful that it does not spring free from the |
|
| contacts. |
| 2. | Press any button 20 times with the battery |
| 3. | removed. |
| Always wait at least 10 minutes after removing | |
|
| battery before |
Primary Alkaline | Rechargeable Alkaline |
battery switch position | battery switch position |
3.Insert 1 x AA Alkaline battery into the compartment, observing the correct polarity (see marking inside battery compartment.
4.Replace battery cover
DO NOT SET THE CLOCK.
Note: For best performance, batteries should be replaced at least once every 2 years to maintain the best running accuracy. Ensure that the batteries used are new and the correct size.
Please help in the preservation of the environment and return used batteries to an authorized depot.
SETUP AFTER CHANGING/REPLACING THE BATTERY
1.After powering up the solar clock, all LCD segments will light up briefly and it will show the time (12:00), indoor temperature, date, and indoor humidity.
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problems may occur. |
WWVB RADIO CONTROLLED TIME
The NIST radio station, WWVB, is located in Ft. Collins, Colorado and transmits the exact time signal continuously throughout the United States at 60 kHz. The signal can be received up to 2,000 miles away through the internal antenna in the atomic clock. However, due to the nature of the Earth’s Ionosphere, reception is very limited during daylight hours. The atomic clock will search for a signal every night when reception is best. The WWVB radio station derives its signal from the NIST atomic clock in Boulder, Colorado. A team of atomic physicists continually measures every second of every day to an accuracy of ten billionths of a second a day. These physicists have created an international standard, measuring a second as 9,192,631,770 vibrations of a Cesium 133 atom in a vacuum. This atomic clock regulates the WWVB transmitter.
After 15 minutes the WWVB tower icon in the clock display will start flashing in the top center of the LCD. This indicates the clock has detected a radio signal and is trying to receive it. When the time code is received, the WWVB tower becomes permanently lit and the time will be displayed.
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